Question

State that Sin²¤+cos²¤=1

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer:

let's substitute the values of theta

1). if ∅= 0°

sin0+cos0=0+1=1

similarly

2).if∅=45°

sin45°+cos45° = ½+½ = 1

hence proved